Process of making flanges.



J. H. TAYLOR I PROCESS OF MAKING FLANGES.

APPLICATION FILED APR. 9. 1915.

Lmfi wa Patented 00t,16,1917

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. manufacturing what are known as 'ters l'ieretofo're, either stock angle steel was with the first operation; 40

prep eraras arnur ora ion JAMES HALL, TAYLOR, OF CHICAGO, ILLINOIS.

PROCESS OF MAKING FLANGES.

Specification of Letters Patent.

Patented Got. 16, 1917.

Application filed April 9, 1915. Serial No. 20,120.

To all whom, it may concern:

Be it known that 1, JAMES HALL TAYLOR, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement 1n Processes of Making used or a rolling process was employed, or the flange was pressed from large circular blanks cut from plate steel. In the first method it-is impossible to secure commercial angles of the proper thickness, and a welded seamis also undesirable. In the second method, it is extremely difficult to roll the billet into shape for the larger diameters, as hasbeen found by experience, unless they are extremely heavy and undesirable for the purpose intended. The third method is extremely wasteful.

According to my invention the manufacture is carried out by successive die opera tions, the various stages being illustrated in the accompanying drawings, in which:

Figure 1 illustrates, in plan, the billet Fig. 1 is an end view of the billet in this first stage;

i Fig. 2 illustrates, in plan,'the article after the next operation has'been performed;

Fig. 2 is an end view of the article in the stage shown in Fig. 2;

Fig. 3 illustrates, in plan, the article after the next operationhas been performed;

Fig. 3*" is a sectional viewtaken on the plane of the line 3-3 of Fig. 3;

Fig. 4 illustrates, in plan the article after the next operation has been performed;

. 4 and 4?, wherein,

Fig. 4 is a sectional View taken on the plane of the lines P -4e"- of Fig. 4;

Fig. 5 illustrates the finished article, in plan; and,

Fig. 5 is an edge view of the finished article.

A flat elongated billet is employed, this.

billet being of a uniform thickness, slightly greater than the greatest thickness required in the finished article.

In Fig. 1 this billet is illustrated at 6, and the length thereof is approximately half the circumference of the flange to be formed, suitable allowances for the die operations being, of course, made.

The first stepis to provide the billet with the central slit or slot 7 extending longitudinally of the billet and being spaced equally between the sides and between the ends, as illustrated.

The next step isto separate the sides. This is done by means of suitable dies, to secure the spread illustrated in Figs. 2 and 2 leaving a central opening, elongated and with rounded ends 88.'

It will be seen that the first step may be dispensed with, the blank shown in Fig. 2 being formed with elongated opening in some other way.

The next step is illustrated in Fi gs. 3 and 3. Here again the article is submitted to the action of dies for the purpose of forging downwardly or outwardly'a portion around the inner periphery of the" blank.

This downwardly or outwardly forged portion is illustrated at 9, and, asshown, is of slightly diminished cross section.

The next operation is illustrated by Figs.

it will be seen, the portion 9 has been forced into a right-angled position relative to the flange itself, thus forming the neck "9 the flange itself being illustrated at 10. It will be understood that during the operations which have been described the main portion of the billet, which results ultimately in the flange 10,-is brought down to its proper thickness. At thesame time the neck 9 is brought down to its proper thickness, as shown, being of a somewhat lesser thickness than the flange itself.

The next step is to transform the loopshaped article of Fig. 4 into the circular form illustrated in vFig. 5; This is a mere stretching or reforming operation, which thus produces'the'final article illustrated in the last two f ures,

I claim as new and desire to secureby Letters: Patent of theUnited States:

1. Theprocess of making a forged flange which consists in centrally slitting an elongated flat blank, partially spreading the two sides thus formed, stamping the inner peripheral (portion of the article obliquely downwar while holding the remaining outer peripheral portion in flatcondition,

and then. forcing said inner-peripheral portlon into a rlght-angled'positlon relative to the remaining portion. 1 2. The process. of making "a forged flange which consists in centrally slitting an elongatedfiat blank, partiallyspreading the two sides thus formed, stamping the inner peripheral :portion. of the article obliquely downward while holding the remaining outer peripheral portion in fiat-condition,

then forcingsa'id inner peripheral portion 1 into a right-angledposition relative to the remaining portion, and'then reforming the elongated loop-shaped article thus formed into circularforme The process of making a forged flange which consists in first forming a central elongated opening in anelongated fiat blank,

I and. th'enforcing the central portion of the blank into a position at. an angle to the face of the blank whileholding the remaining outer peripheralportion in fiat condition.

'4. The process of making a forged flange which consists in first forming a central elongated opening in an elongated fiat blank, Ithen forcing the central portion of the blank into a-position atan angle to the face of the blank while holding the remainlng'outer peripheralportion in fiat condition, and then reforming the elongated loop-shaped article thus formed into circular form. i 5. The process of making a forged flange which consists in first forming a central thenforcing the central portion of the blank I elongated opening in an elongated fiat blank,

' into a position at right angles to the face of the blank while holding the remaining outer peripheral portion in fiat condition, and then reforming the elongated loop-shaped article thus formed into circular form.

6. The process of making a forged flange which consists in first slitting an elongated fiat blank, then spreading the two sides thus formed, and then forcing the central portion of the blank into a position at an angle to v 6O maining outer peripheral portion infiat conthe face of the blank while holding the redition.

7. The process of inaking'a forged flange which consistsin first slitting an elongated flat blank, then spreading the two sides thus formed to form a central opening with rounded ends, and then forcing the central. port on of the blank 1nto a positlon at an angle to the face of the blank'while holding the remaining outer peripheral portion. in fiat condition. y v 8. The process of making a forged flange which consists in first forming a; central elongated-"opening an elongated flat blank, then forcing the central portion of the blank into a position at an angle to the face of the V blank while holding theremaining outer pe-- ripheral portion 'in' flat condition, then spreading the "two sides thus formed, and- .then reforming the elongated loop-shaped article thus formed into circular for1n.

9. The process of making a forged flange which consists in centrally slittingvan elon--' gated fiat blank, partially spreading the .two sides thus formed to form a-central opening with rounded ends, stamping the inner peripheral portion of the article obliquely downward while holding the' remaining outer perlpheral portion in fiat condition,

and then forcingsaid inner peripheral por-[ 'tion into a r1ght angledposit1on relative to- 

